Pencil sharpener



mama Aug. 2,1921. a

UNITED. STATES 1,637,849 PATENT OFFICE.

GIOBGI I. m'IOL, 38., '0! ABDIOEE, PENNSYLVANIA, ABBIG NOB 1'0 0. 'KOWAED m! 2 001mm, 0] OLIDEN, NEW JEBgEY, A CORPORATION 0] NEW JERSEY men. SEABPENEB.

Application fled 0mm :1, 1m. Serial Io. 143,000.

My invention relates to an improvement in pencil sharpeners and more particularly to that type of sharpener having a pa1r of rotary cutters supported in .a rotating car- I rier.

Pencil sharpeners of the type to which my invention relates act to sharpen a pencil in such a manner as to put a tapered point on the lead, since the cutters are positioned with 10 their axes at an an le. The tapered point is found highly desirable for the ordinary user of pencils. However, there are certain circumstances under which the tapered point is undesirable and in order to avoid taper- 1 ing the lead of the pencil, it has been known to cut away the en portions of the cutters, that is, the portions operative on the lead, so that their cutting edges will lie in substantial parallelism. S0 The cutting away of the end portions of the cutters has been found satisfactory-for producing a blunt cylindrical lead point on the sharpened pencil, where the pencil lead is of normal SlZe. However, where such a int is desired on a encil in which the lead is larger than norma such, for example, as are used in schools, where such a point is hi hly desirable, the pencil Sharpeners hereto ore roduced are substantiall unsatisfactory. lhus, in producing the esired point they necessarily produce a point of such excessive length and so easil broken as to ne ative the advantage of tlie blunt point.

ow, it is the object of my invention to produce a pencil sharpener so constructed as to readily produce a blunt cylindrical lead point of a desirable length.

Having now indicated, in a general way, the nature and purpose of my invention, I will proceed to a detailed description thereof with reference to the accompanying drawin in which there is illustrated a preferred em diment and in which Fig. 1 is a view partly in section and partly diagrammatic of a pencil sharpener embogying myinvention.

ig. 2 is a plan view of a pencil stop..

Fi 3 is a cil s arpene rspective view showing a penas in the sharpener shown in Fifigre 1.

ferring to the drawings a indicates a base or stand, in which is journalled a shaft 22 upon one end of which is threaded a handle 0 andupon the other end of which is mounted a cutter carrier d,all as is usual in pencil sharpeners of thetype to which my lnvention relates.

The cutter carrier isformed to provide a pencil guide e and serves to support a pair of rotating cutters each provided at one end with a gear g, w ich meshes with a fixed ring gear it supported by the base or stand so that when the carrier is rotated the cutters will be themselves rotated in the carrier.

The cutters f are mounted in the carrier in angular relationship, in order that they will cut away the wood of a pencil on a taper, as is desirable. The cutters adjacent their inner ends are cut awa as at 'i, so that their cutting surfaces wil lie in substantial parallellsm at a distance apart which will accommodate a large pencil lead. Thus, as shown in Figure 1, the cutting surfaces of the cutters throughout most of their extent are at an angle, while for a portion of their extent, adjacent their inner ends, they are in arallelism.

Spaced rom the extreme inner end of each of the cutters is an annular slot 7' in which are adapted to extend prongs is formed on opposite sides of a pencil stop Z so that the stop may be supported between the cutters, as shown in Figure 1. The slots j may be. positioned at any desired point on the cutters within the extent of their cutting surfaces in parallelism.

In operation if the end of a pencil m be inserted through the pencil guide 6, between the cutters, and the cutters rotated, the wood of the pencil will be cut ofl on a taper and the pencil may be gradually advanced between the cutters until the wood is removed from the lead at the extreme end. With further advance of the pencil the lead n, as the wood is cut back, will advance between the parallel cutting surfaces i, which will trim it, removing any remaining wood, without destroying its cylindrical contour or sharpening the point, until the end of the lead contacts with stop Z, which is positioned to sto the pencil after a desired length of lea has been exposed by the removal of the wood therefrom.

It will now be noted that in accordance with my invention a sharpener is provided by the use of which a pencil may be provided with a blunt, cylindrical point of desired length. It will, of course, be obvious 7 what I c aim and desire to that by cutting away the-cutters sufliciently to provide necessary distance between the parallel portions thereof and positionin the slotsj for sto I that a blunt, cylin rical point of any esi-red length can be ut on a pencil havmg a lead of any reasonab e size.

Havin now fully described my invention,

protectby Letters Patent is:-

1. In a pencil sharpener, in combination, a base, a cutter carrier rotatably supported by the base, a pair of cutters rotatably supported by the carrier and having annular slots formed therein between their ends and a pencil stop projecting into said slots and extending between said cutters.

2. In a pencil sharpener, in combination, a base, a cutter carrier rotatably supported by the base, a pair of cutters rotatably supported in angu ar relationship by said carrier, said cutters being cut away adjacent one end of the carrier to form surfaces in substantial (parallelism and having annular slots forme therein and a pencil stop projecting into said slots and extending between said surfaces in parallelism.

3. In a pencil sharpener, in combination a base, a cutter carrier rotatabl supported by the base, a pair of cylindrica cutters rotatgblg supported in angular relationship by sea surfaces adjacent one end thereof extending at an angle to their axes and having annular slots formed therein and-a ncil stop extending .into said slots and between said surfaces.

In testimony of which invention, I have hereunto set my hand, at Camden, N. J., on this nineteenth dag of October 1926.

(mono E. BaR'roL, JR.

use, said cutters having cylindrical 

